20/09/2026
📌 FLOORING Q&A #14
Can Microcement be applied over an existing floor?
One of the reasons microcement can be attractive for renovation projects is that it can potentially be installed over an existing surface, avoiding the need to completely remove the original floor.
But not every existing floor is suitable.
Before considering the finish, the existing substrate needs to be assessed. It should be stable and sound, with no significant movement or loose areas. Cracks, damaged areas, unevenness and other substrate issues may need to be dealt with first.
The preparation will also depend on what is already there — whether that's tiles, concrete, screed or another suitable surface.
This is where good installation practice really matters.
Microcement is a thin finish. It isn't there to correct problems with the floor beneath it.
Get the substrate right first and you're giving the finished surface the best possible foundation.
For an architect, designer or self-builder planning a renovation, the question isn't just “Can microcement go over my existing floor?”
It's “Is my existing floor suitable, and what preparation does it need?”
That's the question worth asking before specifying the finish.
Have a flooring question you'd like answered? Leave it in the comments.